申请人:Council of Scientific & Industrial Research
公开号:US05851546A1
公开(公告)日:1998-12-22
The present invention provides a polymer for the controlled release of a pendent chain linked active ingredient, and a process for the preparation of such a polymer for the controlled release of an active ingredient in response to pH. The process involves selecting a vinyl monomer to which the active ingredient molecule is covalently linked through a pendent group, and selecting monomers bearing catalytic groups. The active ingredient-bearing monomer and the catalytic group-containing monomer are brought in juxtaposition either by complexation or molecular imprinting, and then polymerized with a hydrophilic monomer and crosslinker under an inert atmosphere with a suitable polymerization initiator.
本发明提供了一种用于控制释放侧链连接活性成分的聚合物,以及一种用于制备这种聚合物以响应pH控制释放活性成分的过程。该过程涉及选择一种乙烯单体,通过侧链基团与活性成分分子共价连接,选择带有催化基团的单体。活性成分载体单体和含有催化基团的单体通过络合或分子印迹相邻排列,然后在适当的聚合引发剂下,在惰性气氛中与亲水单体和交联剂共聚。